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Musings, rants and raves on the world of shopping carts and e-commerce, fortified with related business, legal and economic news, as well as announcements about my work on Zen Cart. Brought to you by That Software Guy.

Zen Cart Product Bought allows you to check to see if a logged in customer has purchased a specific product in the past. It’s perfect for cross selling and upselling messages on the product info page or in the shopping cart. You can even check to see if a product has been bought within a particular time period, such as in the last 90 days.